Mathematics: Determine which ratio forms a proportion with 10/6 by using cross products. a) 15/12 b) 30/9 c) 20/9 d) 30/18

Determine which ratio forms a proportion with 10/6

BrainlyAvenger

04.09.2020

The answer here would be D as both of the numbers 10 And 6 have been multiplied by 3:

10 : 6
x3 x3
30 : 18

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amila17

10.03.2022

D. $\frac{30}{18}$

Step-by-step explanation:

Multiply the numerator of one ratio with the denominator of the other. If the products are equal, then the ratios are proportional.

$\frac{15}{12} =\frac{10}{6} \\15*6=12*10\\90\neq120$

∴ NOT proportional

$\frac{30}{9} =\frac{10}{6} \\30*6=9*10\\180\neq90$

∴ NOT proportional

$\frac{20}{9} =\frac{10}{6} \\20*6=9*10\\120\neq90$

∴ NOT proportional

$\frac{30}{18} =\frac{10}{6} \\30*6=18*10\\180=180$

∴ PROPORTIONAL

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John7Gilbert

12.11.2020

Step-by-step explanation:

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